document.writeln("最終更新日 :");
update = new Date(document.lastModified);
yy = update.getYear();mm = update.getMonth() + 1;dd = update.getDate();
if (yy < 91) { yy += 2000; } else if (yy < 2000) { yy += 1900; }
document.writeln(yy + "年" + mm + "月" + dd + "日");